Seals may be able to directly sense oxygen levels in their blood, an ability humans don't possess. A Scottish study reveals these marine mammals adjust their dives based on this vital parameter.

Russell has a PhD in the history of medicine, violence, and colonialism. His research has explored topics including ethics, science governance, and medical involvement in violent contexts. Russell has ...

Fingertip monitors known as pulse oximeters that can be used at home to detect low blood oxygen levels (hypoxaemia) give ...